View file modules/viewer/apk.php

<?php
require_once $_SERVER['DOCUMENT_ROOT'].'/system/function.php';
header('Content-type:image/png');

$name = isset($_GET['file']) ? guard($_GET['file']) : null;
$url = H.'/files/'.$name;
if (empty($name)) {
	header('HTTP/2.0 404 Not found');
	exit;
} elseif (!file_exists($url)) {
	header('HTTP/2.0 404 Not found');
	exit;
}

$zip = new ZipArchive;
if ($zip->open($url) === true) {
	for ($i = 0; $i < $zip->numFiles; $i++) {
		$t = $zip->statIndex($i);
		if (preg_match('/res\/mipmap(|-ldpi(|-v4|-v17)|-mdpi(|-v4|-v17)|-hdpi(|-v4|-v17)|-xhdpi(|-v4|-v17)|-xxhdpi(|-v4|-v17)|-xxxhdpi(|-v4|-v17))\/(ic_launcher|launcher_icon|icon|logo|ic).(png|jpg|jpeg|gif)/is', $t['name'])) {
			$icon = $t['name'];
		} elseif (preg_match('/res\/drawable(|-ldpi(|-v4|-v17)|-mdpi(|-v4|-v17)|-hdpi(|-v4|-v17)|-xhdpi(|-v4|-v17)|-xxhdpi(|-v4|-v17)|-xxxhdpi(|-v4|-v17))\/(ic_launcher|launcher_icon).(png|jpg|jpeg)/is', $t['name'])) {
			$icon = $t['name'];
		}
	}
}

if (isset($icon)) {
    $img_str = $zip->getFromName($icon);
    $img = imagecreatefromstring($img_str);
    imagealphablending($img, false);
    imagesavealpha($img, true);
    imagepng($img);
    imagedestroy($img);
} else {
    $img = imagecreatefrompng(H.'/assets/img/ic_launcher.png');
    imagealphablending($img, false);
    imagesavealpha($img, true);
    imagepng($img);
    imagedestroy($img);
}

$zip->close();
?>